Short limbs on third trimester scan

Diana

I just came from my OB visit. She told me that my baby’s legs and arms are short (36% ) and she is worried that the baby might have Down syndrome, however , she did say that the stomach , head and everything else is developing healthy so it might not be DS and that sometimes third trimester ultrasounds are not super accurate.

Ps. I didn’t get a genetic test done in the beginning of my pregnancy.

Has this ever happened to anyone ?